Commonly Used Isotopes & Maximum Allowable Concentration

This is only a list of the most commonly used chemicals if you have any questions call 625-1682 or 624-1604.

Table - Prohibited Chemical Use List

Chemical Name

Formula

MAC

Acetone

C3H6O

0%

Acetonitrile

CH3CN

0%

Benzene

C6H6

0%

Chloroform

CHCl3

0%

Dichloromethane

CH2Cl2

0%

Ether

C4H10O

0%

Ethyl Acetate

C4H8O2

0%

Heptane

C7H16

0%

Hexane

C6H14

0%

HPLC

Varies

0%

Isopropanol

C3H8O

0%

Mercury

Hg

0%

Pesticides

Varies

0%

Xylene

C8H14

0%

Generation of a mixed waste with the chemicals listed above Significantly increases the cost of mixed waste disposal. If you cannot avoid use of the chemicals in the table listed above you must contact the RPD and discuss procedures for minimization of mixed waste.

Table III - Maximum Allowable Concentration

Chemical Name

Formula

MAC

Acids and Bases

N/A

pH 7-10

Bleach

OclNa

pH 7-10

Ethanol (EtOH)

C2H5OH

5%

Formaldehyde

CH2O

4%

Formalin

CH2O

4%

Formamide

CH3NO

100%

Methanol (MeOH)

CH3OH

10%

Phenol

C6H6O

50%

Polychlorinated biphenyls

PCB'S

<50ppm

Sodium Azide

N3Na

1%

If you cannot avoid use of the chemicals that are listed in the tables above and have concentrations that are greater than the MAC you must contact the RPD and discuss procedures for minimization of mixed waste

Important: If your chemical concentration is less than the MAC you are required to fill out a Hazardous Waste Manifest.